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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 90, No. 2, 1995, pp. 147-154
Bioline Code: oc95032
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 90, No. 2, 1995, pp. 147-154

 en The Use and Limitations of Ultrasonography in the Diagnosis of Liver Morbidity Attributable to Schistosoma mansoni check for this species in other resources Infection in Community-Based Surveys
ZM Nooman; AH Hassan; AM Mishrirky; M Ragheb; AN Abu-Saif; SM Abaza; AA Serwah; M Kamal & M Fouad

Abstract

The objective of this population-based study was to
estimate the liver morbidity attributable to  Schistosoma  mansoni
  check for this species in other resources
 infection by ultrasonography adopting the proposed
standard protocols of the Cairo Meeting on Ultrasonography,
1991. We examined 2384 individuals representing 20% of the
households of the rural population of the Ismailia
Governorate, East of Delta, Egypt. Prevalence of S.
mansoni and S. haematobium infections were 40.3%
and 1.7% respectively. Portal tract thickening (PTT) grade 1,
2 and 3 considered diagnostic of schistosomal liver morbidity
was detected in 35.1%, 1.3 and 0.2 individuals respectively.
Generally, ultrasonographically-detected pathological changes
increased with age, but correlated with intensity of infection
only in age group 20-59 years. Comparing individuals with and
without S. mansoni infections in an endemic and a non-
endemic community indicated no significant difference between
the former and the latter in either case.

In conclusion: ultrasonography had a limited value in estimating schistosomal liver morbidity in our population- based study where early grades of liver morbidly were prevalent. The criteria of diagnosing grade I portal fibrosis need to be revised as well as the staging system proposed by the Cairo Meeting on ultrasonography in schistosomiasis.

Keywords
hepatic schistosomiasis - ultrasound in Schistosoma mansoni infections - community-based surveys in Schistosoma mansoni infections

 
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